CaratHunter
Plans
Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

VG • H/SI2 • GIA 5182091620

Certificate GIA 5182091620

Diamond specifications and retailer prices

From $750 USD
As of November 1, 2026
Save $1,405 USD (65%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,155 USD at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

About this 0.66ct natural round diamond

This 0.66ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 5182091620. Listed at 7 retailers as of November 1, 2026, with prices from $750 to $2,155, a $1,405 spread on the same certified stone. Diamond Quarter lists it at $2,155. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.66
Carat
H
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5182091620
Dimensions5.72 × 5.68 × 3.38 mm
L/W Ratio1.01
Top View
5.72 mm5.68 mm0.66 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5182091620
Side View
Table 58.0%Crown 33°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $893 USD|Low: $750 USD|High: $1,386 USD|Avg: $962 USD|+5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 4$750 USD
Retailer 5$838 USD
Retailer 1$893 USD
Retailer 2$968 USD
Retailer 3$1,369 USD

38 data points across 5 retailers

7 retailers$750 USD to $2,155 USD

A
Cheapest Retailer
-
$750 USD
B+
Retailer 2
-
$838 USD
View
B+
Retailer 3
-
$893 USD
£703 GBP
View
B+
Retailer 4
-
$968 USD
€922 EUR
View
B
Retailer 5
-
$1,284 USD
€1,223 EUR
View
B
Retailer 6
-
$1,369 USD
£1,078 GBP
View
Most Expensive
C
Diamond Quarter
0.66SI2H51200965N · Nov 2
$2,155 USD
£1,697 GBP
View
6 more retailers have this diamond
Prices start from $750 USDSave up to $1,405 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.66ct Round
$750 USD